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Exercise-Related Hematuria Findings in a Group of Marathon Runners

Arthur J. Siegel, MD; Charles H. Hennekens, MD; Harold S. Solomon, MD; Bruce Van Boeckel, MD
JAMA. 1979;241(4):391-392. doi:10.1001/jama.1979.03290300033023.
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Sequential urine specimens were obtained from 50 marathon runners before, immediately after, and on three successive days following a marathon race. All prerace samples were normal, but nine (18%) of the 50 postrace urinalyses showed gross (one specimen) or microscopic (eight specimens) hematuria. No formed elements other than RBCs were seen, and all abnormalities cleared by 48 hours. Exercise-related hematuria appears to be a frequent, self-limited, and benign condition. Physicians should be aware of its occurrence and reserve extended testing for cases in which abnormalities persist beyond 48 to 72 hours.

(JAMA 241:391-392, 1979)


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